Car truck



M-alch 7, 1939. J, A CAMERQN l 21,149,272

CAR TRUCK Filed Jan. 17, 1935 2 Sheets-Sheet l )l Ill',

l I lul-- l V March 7, 1939.

. 1. A. CAMERON CAR TRUCK VFiled Jan.17, 1935 2 sheets-Sheet 2 Patented Mar. 7, 1939 PATENT OFFICE oAn TRUCK Joseph Ashmore Cameron,

Canada poration, Rochester, Maryland Montreal, Quebec,

assignorto'The Symington-Gould Cor- N. Y., a .corporation fof Application January 17, 1935, ASerial No. 2,272

15 Claims.

This invention relates to improvements in car Further objectsy of the invention are to eliminate the -skid of opposite wheels on Acurves and to provide Vrfor the more efficient mounting and K springing of the wheels and car axles.

' -One of lthe vmain characteristics ofthe present invention is the elimination of the usual truck side frame which very substantially lightens' the car body construction. Another characteristic Ais the provision lon the car truck of draught and coupling attachments built integrally therewith1 which take the buing and pulling shocks from the-car-body. Y 'y ."In its construction the invention includes a longitudinally extending member or bolster 'having spaced transversely extending supporting members for the car axle and having couplingattaelnnents"A at ropposite ends, the trucks of Athe same carbeing connected by an articulated lconnectingmember, all of which is more fully here- 25. inafter set out and described inthe accompanying specicat-ion and drawings.

In the drawings, 'Fig 1 isa plan y*view o1' ya single car truck embodying the present invention. 30y Fig; '2 is ay sectional elevation taken on the line 2 2 of Fig. 1.

Fig. 3 Aisv a -sectionalelevation on the line 3--3 of Fig. 1.k Y

Figa isa plan -view showingtwo trucks and the Acar body in dotted lines. l

5 is la. section on the line i-i 'of Fig. 3. Fig. 6 is va sectional detail of -the -end of the caraxle taken .onthe line `6 6 of Fig. 5.

rIn the drawings, like characters `oi reference represent corresponding parts in all the iigures.

.Referring .to .the drawings, A indicates a. centra-l, Vlongitudinally Yextending member or bolster, conveniently constructed from hollow .cast .or built uptplate metal with reinforced interiorfweb- 'bilig -BleVideda-t itsAcentre with a .centre plate bearing B of .similar form lto :that usually found in the .ordinary car rbolster .and designed to receive a, .centre plate .and ,centre ipin on the underside of the .car body. The vbody centre plate 50 'and centre pin usually. have a supportingA bolster which may be :of any convenient design and is i-ndicatedin dotted lines only in Fig. 2.

The member Ais formed with coupling .connecting .attachments at opposite ends lwhereby adjacent carsmay loes-connected tos-.ether and the (Cl. m5-17.6)

two trucks on a single car connected together. In the form shown in Figs. 1 and 2 an upwardly projecting housing I0 is formed at one end of the bolster A designed to house and support one member C of a standard car coupler, the housing having apertures I I and AI2 at the top and bottom through which access maybe had to the parts of the coupler unit, the end of the housing Ill projecting adistance rbeyond the end of the bolster.'

The opposite end of the bolster A to that at which the housing I0 is mounted is connected to a connecting rod er `bar D which hasv an articulated or swivelled connection I3 with the lbolster A, a -similar connection being provided on the bolster of the next car truck whereby the 'buff will 'be transmitted to the car trucks independently of the car body, which will be Vrelieved of the strains thereof.

E indicates the car axles which extend through housings F, `vertically lmovable with respect to the bolster Ar in vsuitable guideways G, and supporting coil springs |14 and elliptical springs I5. In some circumstances either the coil or elliptical springs lmight beused alone.

Each Vof the axle housings F is tubular in form and extends 'from one end to the other vof the axle, being provided at the centre with a square portion 2li which fits the guideways G formed on the ymember A. At opposite ends each ofthe axle housings F is formed with laterally projecting spring seats 2l and 22, which extend on lOpposite sides and are designed to seat the coil springs I4. Thevends of the members are flanged at 23 and the ila-nges may abut the wheels H or Apreferably Aa washer plate 24 may 'Ibe inserted between the 4flanges and the wheels. It 4wi-ll 'be seen Athat the movement of the wheels towards each other is'limited bythe ends Iof the axle housing, which thereby 'assists in preserving an accurate gauge between thewheels.

The wheels H `are independently rotatable on the axle E and are preferably provided with roller .bearings vI -of any convenient `design. The car wheels are thus able to *move independently of eac-h other at all times, eliminating skid of -opposite :wheelswhenon curves or Where :there :is variation in wheel diameter.

At .some times during vthe motion of ythe car the slight, lateral movement of the fwheels may cause fthe fend .of the axle to bear against the end @plate 25 of .the'roller Sbearing, :and to Kreduce any, :friction that :may result l `.preferably provide on the vsaid endcplate a [bearing ldisc for :plate 26 mounted in a roller yrace 2.1 .of any donvenient design, so that when the end of the axle comes in contact with the plate 26, the latter may turn freely.

It will be appreciated that the elimination of the usual truck side frames will very materially lighten the car body construction and the arrangement of the bolsters pivotally connected with the car body and having articulated connections with each other and draught connections at opposite ends will relieve the car body from buing and pulling shocks and enable the trucks to eiectively follow the track alignment.

It will be seen that each of the car trucks herein shown consists only of three major elements, namely the bolster A and the two car axle housings F which may be readily assembled together and when so assembled will effectively support the car and wheels in the manner already described.

Various modifications may be made in the invention without departing from the spirit thereofv or the scope of the claims and therefore the exact forms shown are to be taken as, illustrative only and not in a limiting sense, and I desire that only such limitations shall be placed thereon as are imposed by the prior art or are specifically set forth in the appended claims.

What I claim as my invention is:

l. A car truck comprising a central longitudinally extending member, transversely extending supporting members spaced apart longitudinally of the truck for supporting the truck from the car wheels, said member being spaced laterally from the car wheels, said supporting members projecting on each side of said longitudinally extending member to a point adjacent to the wheels, and an upwardly extending housing at one end of 'the longitudinally extending member forming a continuation of said central member adapted to receive a draught attachment.

y 2. A car truck comprising a central longitudinally extending bolster spaced laterally from the truck wheels, pedestal ways mounted on said bolster, and housings for the car axles detachably mounted on the pedestal ways and extending approximately the full distance between wheels on said axles, and supporting Yspring means interposed between said bolster and housings.

3. A car truck comprising a central longitudinally extending bolster spaced laterally from the truck wheels, pedestal ways mounted on said bolster, housings for the car axles detachably mounted `on the pedestal Ways, draught attachments connected to the bolster, and lateral extensions on the bolster directly overlying the truck axles for engaging supporting springs.

Ll. yA car truck comprising a central longitudinally extending bolster spaced laterally from the truck.r wheels, pedestal ways mounted on said bolster, housings for the car axles detachably mounted on the pedestal ways and springs between the housings and lateral extensions at the ends of the bolster.

5,. A car truck comprising a central longitudinally extending bolster, pedestal Ways mounted thereon, housings for the car axles mounted on the pedestal Aways and extending approximately from wheel to Wheel, and elliptical and coil springs betweenthe housings vand lateral extensions on the bolster.

6. A car body construction comprising a plurality of cartrucks, each having axles, wheels thereon, and a central longitudinally extending bolster with arms'extending laterally and overlying said axles, and an articulated connection aligned with said bolster and extending between adjacent trucks.

7. A car body construction comprising a pair of trucks, each having axles, wheels thereon, and a longitudinally extending bolster with laterally extending arms overlying said axles, a connecting bar between the trucks normally aligned with said bolster and having a swivelling connection with each bolster, and draught and coupling attachments on the trucks.

8. A car truck comprising axles, wheels thereon, and a longitudinally extending bolster having two guideways on the under-side thereof, car axle housings extending approximately from wheel to wheel and vertically slidable in the guideways, means extending laterally of the truck from said bolster and spring means acting between the said means and the axle housings.

9. A car truck comprising wheels, axles, a central longitudinally extending hollow bolster spaced laterally from the wheels having guide- Ways onkthe under-side and having laterally extending spring seats projecting from the bolster to a point adjacent to said wheels, car axle housings encasing said axles and mounted in the guideways, said housings having spring seats extending laterally therefrom, and springs extending between the spring seats on the bolster and the housings.

10. A car truck comprising wheels, axles, a central longitudinally extending hollow bolster spaced laterally from the wheels, having guideways on the under-side and having laterally extending spring seats projecting from the bolster to a point adjacent to said wheels, car axle housings encasing said axles and mounted in the guideways, said housings having spring seats extending laterally therefrom, springs extending between .the spring seats on the bolster and the housings, and draught means connected to opposite ends of the bolster. 1

11. A car truck comprising wheels, associated axles, and a central longitudinally extending memberl with transversely extending supporting arms spaced apart longitudinally of the truck s0 as to directly overlie said axles, supporting means associated with the axles and slidably connected f to said arms, said member being` spaced laterally from the wheels, and said arms projecting on each side of the longitudinally extending member to a point adjacent to the Wheels. I

12. A car truck comprising wheels, associated axles, and a centrally disposed longitudinally extendingV hollow bolster with reinforced webbing, lateral extensions` at opposite ends thereof spaced apart longitudinally of the truck so as to each directly overlie-an axle, and supporting members connected to land positioned below the lateral extensions for supporting the truck from the car wheels. Y y

13. A car truck comprising wheels, axles, a central longitudinally extending bolster having lateral extensions connected to the axles, said bolster being adapted to move vertically with respect to the axles and spaced laterally from the wheels, said extensions projecting from the bolster over the axles and coil springs between the axles and the extensions, said springs being positioned intermediate the wheels and longitudinally extending bolster.

14. A car truck comprising wheels, axles, a central longitudinally extending bolster spaced laterally from the car wheels, pedestal ways mounted on the bolster, lateral extensions on the bolster,.housings vfor lthe car axlesslidably engaging the pedestal Ways, and resilient means interposed between the lateral extensions and housings.

15. A car truck comprising a central longitudinally extending member, transversely extending supporting members spaced apart longitudinally of the truck for supporting the longitudinally extending member from the car Wheels, lateral extensions on said longitudinal member directly overlying said supporting members, said supporting members projecting on each side of said longitudinally extending member to a point adjacent to the Wheels, and resilient means positioned intermediate the wheels and longitudinally extending member, said resilient means being interposed between said lateral extensions and supporting members.

JOSEPH ASHMORE CAMERON. 

